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Author Question: A form of beam restriction that is a flat piece of lead with a hole of the designated size and shape ... (Read 17 times)

Jipu 123

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on: Jul 17, 2018
A form of beam restriction that is a flat piece of lead with a hole of the designated size and shape in its center is:
 
 an aperture diaphragm
  an extension cone
  PBL
  manual collimation

Question 2

Which positioning line connects the mentum of the chin to the external auditory meatus?
 
 infraorbitomeatal line
  acanthiomeatal line
  orbitomeatal line
  mentomeatal line


joshraies

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Reply #1 on: Jul 17, 2018
Answer to Question 1

an aperture diaphragm

Rationale: Aperture diaphragms provide an unexposed border around the periphery of the image. Dedicated chest units apply a fixed aperture diaphragm.

Answer to Question 2

mentomeatal line

Rationale: The line that connects the mentum of the chin to the external auditory meatus is the mentomeatal line.


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